摘要:
A solar cell using a printed circuit board (PCB) includes a substrate that is formed of an insulating material and in and through which a plurality of fixing holes and communication holes are alternately formed; a plurality of photoelectric effect generators that have ball or polyhedral shapes fixed to the substrate to be disposed over the plurality of fixing holes, and generate photoelectric effects by receiving light through light-receiving portions that are exposed to an upper portion of the substrate; a plurality of upper electrodes that are formed on a top surface of the substrate, and are connected to the respective light-receiving portions of the photoelectric effect generators; and a plurality of lower electrodes that are formed on a bottom surface of the substrate to be connected to respective non-light-receiving portions of the photoelectric effect generators, and communicate with the plurality of upper electrodes through the plurality of communication holes.
摘要:
This invention relates to a composition for promoting hematopoiesis and for treating, preventing or alleviating cytopenia or bone marrow failure comprising quercetin 3-O-β-(2″-galloyl)-rhamnopyranoside (QGR) as active ingredient. The present active compound QGR (i) increases dose dependently the mRNA expression of cytokines involved in hematopoiesis including stem cell factor, granulocyte-macrophage colony stimulating factor and erythropoietin from mouse bone marrow mononuclear cells, (ii) promotes the formation of burst forming unit-erythroid and colony forming unit-fibroblast, (iii) stimulates the generation of cells positive for TER-119, a specific marker of mouse erythroid precursors, (iv) promotes erythropoiesis, leukopoiesis, thrombopoiesis, and hemoglobin production in bone marrow failure mouse model, (v) stimulates the formation of hematopoietic stem/progenitor cells and mesenchymal stem/progenitor cells, (vi) stimulates megakaryocyte formation surrounding the blood system of damaged bone marrow, osteoid formation and bone marrow restoration through a recovery of damaged bone marrow microenvironment. The QGR of the present invention can be used for promoting hematopoiesis and treating cytopenia or bone marrow failure.
摘要:
An air and coolant control system comprising: a heat source configured to receive air, generate heat, receive coolant, conduct the received coolant to a coolant outlet, and transfer the generated heat to the received coolant, thereby removing the generated heat from the heat source as the coolant is conducted out of the heat source; an air supply source configured to supply the air to the heat source; an air supply control system configured to adjust the supply of air from the air supply source to the heat source based on a dynamic feedback temperature characteristic from the heat source; a coolant supply source configured to supply the coolant to the heat source; and a coolant control system configured to adjust the flow rate of the coolant based on an estimated feed-forward heat source characteristic and to adjust the temperature of the coolant based on the dynamic feedback temperature characteristic.
摘要:
A digital broadcasting system provides a method and device for packetizing a video stream. The packetizing device includes: a video frame check block for classifying an encoded video stream according to the frame type; a header setting block for setting a packet header for each of the classified frames; and a packetizing block for packetizing a video frame on the basis of the set packet header. The frame type may be one of an intra-coded (I) frame, a predicted (P) frame, and a bi-predictive (B) frame. Since a digital broadcasting stream is efficiently packetized, overhead due to a typical synchronization packet may be reduced, and accordingly, bandwidth may be efficiently used.
摘要:
Disclosed is a method for suppressing a speed ripple occurring during an operation of an AC motor by using a torque compensator based on an activation function. The method includes the steps of calculating a speed error ωerr based on a reference speed ωref and an actual speed ωact; calculating a controller output Trm by using the speed error ωerr as an input of a PI control and an operation of a compensated torque Tcom; and determining a torque variation based on the controller output Trm and a reference torque Tref and operating the torque variation in relation to an anti-windup gain Ka to use torque variation as an input of an integral (I) control. The method suppresses the speed ripple by compensating for the torque ripple through a controller which calculates the compensated torque by taking the signs of the speed error and the differential speed error into consideration.
摘要:
Disclosed herein is a method of controlling the current of a high-speed Switched Reluctance Motor (SRM) using an inverter circuit including a first switching element, a second switching element, a first diode, a second diode and a reactor, wherein the first switching element and the first diode, the second diode and the second switching element are connected to a bridge circuit, and one end of the reactor is connected to the junction of the first switching element and the first diode, and the remaining end of the reactor is connected to the junction of the second diode and the second switching element; and excitation mode, free-wheeling mode-1, the excitation mode, and free-wheeling mode-2 are sequentially performed in a unit period T, and, when the control is terminated, demagnetization is performed.
摘要:
A transmitter is provided for amplifying signal power in a communication system. The transmitter includes a single-tone signal generator for generating a single-tone signal; a baseband signal generator for generating a baseband signal; a bias modulator for switching a positive bias signal to a first power amplifier using the baseband signal, and switching a negative bias signal to the second power amplifier using the baseband signal; the first power amplifier for power-amplifying the single-tone signal using the positive bias signal; and the second power amplifier for power-amplifying the single-tone signal using the negative bias signal.
摘要:
The present invention relates to polypropylene-based composite resin composition for an automotive interior trim. The polypropylene-based composite resin composition herein has relatively high rigidity and surface impact and relatively low molding shrinkage and coefficient of linear expansion, thus having superior dimensional stability.
摘要:
A system of electronic tag has developed for integrated processing by utilizing RFID technology, which comprises a reader for collecting information, processor for processing success failure, unsure state of instruction, and a terminal for submitting transaction and receiving the result of transaction to identify. The method for integrated processing of an electronic tag comprising steps of: (A) storing information on the requested transaction and starting the transaction; (B) determining the electronic tag identifying a subject for the transaction with the stored electronic tag and requesting the transaction corresponding to the identified electronic tag to the reader; (C) storing the corresponding electronic tag in an electronic tag list and defining the electronic tag as an unsure state if the unsure state is identified from the requested electronic tag; and (D) reporting on user's terminal if the user requests to terminate the transaction of the electronic tag list corresponding to the defined unsure state.
摘要:
Disclosed is a stock account/order/market price inquiry service method using a mobile terminal that is able to perform a stock account/order/market price inquiry service through a mobile terminal using a stock chip. A stock account/order/market price inquiry service method comprising the steps of: (1) displaying a lower menu page on a mobile terminal of the stock account/order service after a PIN authentication; (2) generating an account/order service request message on the basis of stock chip information read from a stock chip and service request information corresponding to the lower menu and then transmitting the same to a relay server; and (3) receiving a service response message corresponding to service request message from the relay server and displaying the same on the screen of a mobile terminal.